13 And this is what they shall give, as many as pass the survey, half a shekel which is according to the shekel of the sanctuary (a shekel is twenty gerahs). The half-shekel shall be the offering to the Lord.
Exodus 30:13 Cross References - CAB
Exodus 38:26
26 He made the bronze laver, and the bronze base of it of the mirrors of the women that fasted, who fasted by the doors of the tabernacle of witness, in the day in which he set it up.
Leviticus 27:25
25 And every valuation shall be by holy weights: the shekel shall be twenty gerahs.
Numbers 3:47
47 you shall even take five shekels a head; you shall take them according to the holy shekel, twenty gerahs to the shekel.
Ezekiel 45:12
12 And the weights shall be twenty gerahs, your pound shall be five shekels, fifteen shekels and fifty shekels.
Matthew 17:24
24 When they had come to Capernaum, those who collected the temple tax came to Peter and said, "Does your Teacher not pay the temple tax?"
Matthew 27:24
24 And Pilate, seeing that nothing was being gained, but rather a riot was starting, taking water, he washed his hands clean in front of the crowd, saying, "I am innocent of the blood of this just Man. You see to it."